Message: | 1.Henan Uters International CO.,LTD is a Good brand, good reputation Lubricating oil filter based diversified large-scale enterprises, created in Henan Province,Zhengzhou City,City area,North Third Ring Road. So far our company has created a number of production bases in ,,,,,and other regions , Henan Province,Zhengzhou City,City area,North Third Ring Roadalways adhere to the people-oriented management philosophy, committed to construction of caring enterprises.
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Air filter
The prototype air filter is a respiratory protection device that people use to protect their breathing. According to records, as early as a century of Rome, when they were purifying mercury with a mask made of burlap for a long time after that. Air filters have also made progress, but they are mainly used as respiratory protection appliances in hazardous industries such as the production of hazardous chemicals. The release of the mobile appraisal system in 1827 made people have a better understanding of the mechanism of air filtration. The rapid development of air filters is closely related to the development of the military industry and the electronics industry. In the 1950s, the United States conducted in-depth research on the production technology of glass fiber filter paper and made the air filter improved and developed. In the 1960s, HEPA filters were introduced; in the 1970s, HEPA filters with fine glass fiber filters as filter media were used. 3 micron |